Pron

In June 2011 the adult website known as Pron suffered a significant data breach. The attack was carried out by the notorious hacker collective LulzSec as part of their 50 Days of Lulz campaign. The breach resulted in the exposure of user credentials. The data was stored and subsequently leaked in a completely unencrypted format which posed a severe security risk to all registered members at that time. The site has since become defunct but the historical data remains a part of known data leak archives.